Hi Pranav,
Sorry to hear about your ordering problems here. There should be an error code referenced (MD, MR, 0, etc) with the "There was a problem with your order". If you can drop us a line to orders@oreilly.com with the exact error code we can assist you in sorting it out.

If you have any further questions or require further assistance,
You can contact us at:
1-800-889-8969
or
1-707-827-7019 (outside the USA)
7:30 am to 5:00 PST